All of the tasks listed on the project plan need to be assigned to an individual or team. The person or persons responsible for a task will need to know in detail what the task involves and also the dependencies and timescales, which can be clearly communicated to them using the Gantt Chart. The timescales must be realistic and, in practise, the project manager will probably have discussed timescales with the team before the schedule was finalised. They will also need to understand the criteria by which each task is determined as complete.